Haojia Zhan
Ex parte reexamination requester·2 ex parte reexams
Haojia Zhan has requested 2 USPTO ex parte reexaminations, with 2 currently open. It most often challenges patents owned by Shenzhen Nanke Trading Co. Ltd.. ExamPat indexes the full prosecution record for each proceeding, including office-action grounds, certificate outcomes, and downstream PTAB and Federal Circuit decisions.
Filings by year
Top patent owners challenged
Outcome track record
How this requester's challenges resolve: claims confirmed, amended, mixed, or fully canceled.
- Certificate outcome split across every bucket
- Share of challenges that canceled claims
Challenge metrics
Cancellation rate, average pendency, and the open/closed split across every reexam this requester has filed.
- Outcome rate of closed challenges
- Average pendency in months
Examiners & defense counsel
Which examiners decide this requester's challenges, and which firms defend the targeted patents.
- Most frequent examiners
- Top opposing counsel
Recent reexaminations (2)
| Control # | Filed | Patent | Title | Owner | Status |
|---|---|---|---|---|---|
| 90/016,263 | May 11, 2026 | D981,200 | CANDLE WICK TRIMMER | Shenzhen Nanke Trading Co. Ltd. | Open |
| 90/016,223 | Apr 30, 2026 | D973,283 | Candle snuffer | Shenzhen Nanke Trading Co. Ltd. | Open |
See the full reexam picture for Haojia Zhan
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